Oops ;)

SELECT * FROM gallery2 WHERE topic_id="1342699" UNION SELECT * FROM gallery2 WHERE topic_id="577122" UNION SELECT * FROM gallery2 WHERE topic_id="1388249" UNION SELECT * FROM gallery2 WHERE topic_id="1432154" UNION SELECT * FROM gallery2 WHERE topic_id="1733114" UNION SELECT * FROM gallery2 WHERE topic_id="1803427" UNION SELECT * FROM gallery2 WHERE topic_id="1543855" UNION SELECT * FROM gallery2 WHERE topic_id="1698724" UNION SELECT * FROM gallery2 WHERE topic_id="559573" UNION SELECT * FROM gallery2 WHERE topic_id="758530" UNION SELECT * FROM gallery2 WHERE topic_id="1081609" UNION SELECT * FROM gallery2 WHERE topic_id="166134" UNION SELECT * FROM gallery2 WHERE topic_id="502658" UNION SELECT * FROM gallery2 WHERE topic_id="1616418" UNION SELECT * FROM gallery2 WHERE topic_id="193539" UNION SELECT * FROM gallery2 WHERE topic_id="459796"